Tarsis.
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Your day has a story to tell

Feel like
yourself again.

What you eat. How you sleep. The energy you feel. See it all in context and get to know yourself a little better.

Get started with TarsisExplore the app

Start with free daily tracking. At your own pace.

IT’S ALL CONNECTEDNutritionEnergyRestHabits

Keep it simple

A moment for yourself. Every day.

01

Record your day

Start with what you want to observe: your meals, your rest or how you feel.

02

Find some perspective

Look back at your entries and charts to see how things change from day to day.

03

Choose your next step

Use that context to review your goals and decide what you want to keep exploring.

A space to understand your day

Bring the details into focus.

From your first entry to your trends: a simple way to keep track of what matters to you.

01 / 03

Start with how you feel.

Bring your energy, rest, pulse, temperature and nutrition into one daily view. You choose what to record.

Explore Tarsis

App shown in Spanish with sample data. These are not user results.

Tarsis · Your day
Your day · App shown in Spanish with sample data. These are not user results.

See the bigger picture

There’s more to you than one number.

A meal, a night’s sleep, a day with more energy. Tarsis brings your records together so you can see them in context and notice what changes over time.

Made to be there for you

More context for your choices.

What you eat and how you feel

Nutrition, energy, sleep, pulse and temperature share one space. See your records together, with room for the details.

Extra help, when you want it

With Pro, Tarsis+ helps you explore your questions. You can also estimate a meal’s macros from a photo. AI is optional, and its answers need your review.

You decide when to use AI

Keep tracking manually without enabling AI. Before you use it, Tarsis asks permission to send the relevant content and context to Google Gemini.

Read about privacy

Choose where to start

The essentials. And more when you need it.

Start with your daily records. Add more tools with Tarsis Pro when it feels right for you.

Tarsis

A place to get to know yourself.

Free

For your everyday records

Get started for free
  • Manual tracking of your daily signals
  • Food and macronutrient tracking
  • Charts for the last 14 days
  • Journal view for the current month

Tarsis Pro

Take a closer look

More tools to see the bigger picture.

Made for you

See pricing in the app

Discover Tarsis Pro
  • Access to your complete history
  • 30-day trends and analysis
  • Optional Tarsis+ AI assistant
  • Macro estimates from meal photos
  • Monthly PDF report

Prices, available options and renewal terms are shown in the app before you confirm a purchase. You can cancel your subscription’s renewal.

Before you get started

A few things you might be wondering.

Help and contact
What can I do with Tarsis?

You can record your food, macronutrients, energy, sleep, pulse and temperature, then explore their trends. It gives you more context for your day, based on the information you choose to add.

Can I use it for free?

Yes. Tarsis includes manual tracking, 14-day charts and a journal view for the current month. Pro adds tools such as complete history, 30-day trends, optional AI and a monthly PDF report.

Do I have to use artificial intelligence?

No. You can track manually without enabling AI. AI features require your permission to send relevant content and context to Google Gemini through Tarsis. You can withdraw that permission in Profile → Privacy.

Where is my data stored?

Your daily journal is stored on your device. Your account and subscriptions use online services. If you choose to use AI, the content and context needed for your request are sent for processing. Read the privacy policy for the details.

How do I cancel Tarsis Pro?

Manage your subscription through the provider you used to purchase it: Apple for iOS purchases or Stripe for web purchases. When you cancel renewal, your access continues until the end of the period you have already paid for.

Does Tarsis replace a health professional?

No. Tarsis is a tracking and guidance tool. It does not diagnose conditions or provide treatment. Its estimates, trends and AI responses do not replace advice from a qualified health professional.

Start where you are

Your next entry could be your first.

You don’t need to have it all figured out. Just take a moment to notice how your day has been.

Get started with Tarsis